| Name | Character | Episodes |
|---|---|---|
| Gudrun Landgrebe | Dr. Brigitte Foucart | 3 |
| Francis Fulton-Smith | Maurice LaBréa | 3 |
| Katja Woywood | Francine Dalzon | 1 |
| Hans Peter Korff | Monsieur Hugo | 1 |
| Simon Verhoeven | Vincent Brihac | 1 |
| Natalia Avelon | Dr. Hélène Clément | 1 |
| Sabine Vitua | Christine Payan | 1 |
| Felicitas Woll | Caroline Becker | 1 |